DINReplaced → ISO 4018Draft · single source
DIN 558
Hexagon head screws, fully threaded, product grade C
- Head · drive
- Hexagon head · External hexagon (spanner)
- Thread
- Metric ISO coarse thread, full length
- Tolerance
- 8g
- Property classes
- 3.64.6
- Materials
- Steel
Replaced by
ISO 4018Current · Draft
Not identical: the width across flats differs for M10 (DIN 17 → ISO 16 mm), M12 (19 → 18 mm), M14 (22 → 21 mm) and M22 (32 → 34 mm); other sizes are unchanged. Other dimensions (e.g. head or nut height) can also differ.
What changed · s
| Size | DIN 558 | ISO 4018 | Δ |
|---|---|---|---|
| M10 | 17 | 16 | −1 |
| M12 | 19 | 18 | −1 |
| M14 | 22 | 21 | −1 |
| M22 | 32 | 34 | +2 |
Source: Würth DIN→ISO changeover list · mm
Dimensions
mm · values as the standard states them| Size | P | s | e | k | c | r | A | L |
|---|---|---|---|---|---|---|---|---|
| M5 | 0.8 | 8 | 8.63 | 3.5 | ≤ 0.5 | 0.2 | ≤ 2.4 | 10 – 60 |
| M6 | 1 | 10 | 10.89 | 4 | ≤ 0.5 | 0.25 | ≤ 3 | 12 – 80 |
| M8 | 1.25 | 13 | 14.2 | 5.3 | ≤ 0.6 | 0.4 | ≤ 4 | 10 – 100 |
| M10 | 1.5 | 17 | 18.72 | 6.4 | ≤ 0.6 | 0.4 | ≤ 4.5 | 16 – 100 |
| M12 | 1.75 | 19 | 20.88 | 7.5 | ≤ 0.6 | 0.6 | ≤ 5.3 | 16 – 120 |
| M14 | 2 | 22 | 23.91 | 8.8 | ≤ 0.6 | 0.6 | ≤ 6 | 20 – 100 |
| M16 | 2 | 24 | 26.17 | 10 | ≤ 0.8 | 0.6 | ≤ 6 | 25 – 160 |
| M18 | 2.5 | 27 | 29.56 | 11.5 | ≤ 0.8 | 0.6 | ≤ 7.5 | 35 – 180 |
| M20 | 2.5 | 30 | 32.95 | 12.5 | ≤ 0.8 | 0.8 | ≤ 7.5 | 30 – 200 |
| M22 | 2.5 | 32 | 38.42 | 14 | ≤ 0.8 | 0.8 | ≤ 7.5 | 45 – 220 |
| M24 | 3 | 36 | 39.55 | 15 | ≤ 0.8 | 0.8 | ≤ 9 | 50 – 240 |
| M27 | 3 | 41 | 45.2 | 17 | ≤ 0.8 | 1 | ≤ 9 | 55 – 280 |
| M30 | 3.5 | 46 | 50.85 | 18.7 | ≤ 0.8 | 1 | ≤ 10.5 | 60 – 300 |
| M36 | 4 | 55 | 60.79 | 22.5 | ≤ 0.8 | 1 | ≤ 12 | 70 – 360 |
| M42 | 4.5 | 65 | 71.3 | 26 | ≤ 1 | 1.2 | ≤ 13.5 | 80 – 420 |
| M48 | 5 | 75 | 82.6 | 30 | ≤ 1 | 1.6 | ≤ 15 | 100 – 480 |
| M56 | 5.5 | 85 | 93.56 | 35 | ≤ 1 | 2 | ≤ 16.5 | 110 – 500 |
| M64 | 6 | 95 | 104.86 | 40 | ≤ 1 | 2 | ≤ 28 | 120 – 500 |
Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.